Ifilter not found in aforge.dll, reference to zero touch importing

[shah55022]

Hy! I was trying to learn zero touch importing from dynamo Primer. Here they have mentioned a filter (IFilter.apply) which I didn't found in the aforge.imaging.dll library although I downloaded more previous version as well. I tried the Basefilter.apply as a substitute for ifilter but it didn't work and gives a warning. I am trying to create automatically a model from an AUTOCAD file in revit. any help would be appreciated.